Peters



3 Sheets-Sheet 1. R. MAIR.

' (No Model.)

LOOM.

Patented Apr. 27, 1886.

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3 Sheets-Sheet 3. R. MAIR.

(No Model.)

LOOM.

Patented Apr. 27; 1886.

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Inventor: fig

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UNITED STATES PATENT OFFICE.

ROBERT MAIR, OF BRIDESBURG, ASSIGNOR TO THE BRIDESBURG MANU FAOTURING COMPANY, OF PHILADELPHIA, PENNSYLVANIA.

LOOM.

SPEGIFICATION forming part of Letters Patent No. 340,589, dated April 27, 1886,

Application filed August 1, 1884.

of Pennsylvania, have invented a new and useful Improvement in Looms, of which the following is a specification.

My invention relates to shuttle binding or pressure devices of looms and to devices for operating the belt-shipper slide; and it c0n-' sists, first, in certain combinations of parts for producing an increased pressure upon the shuttle-binders and automatically effecting a relaxation of the pressure; and, second, in a certain combination of parts for operating the beltshipper slide directly by an arm of the loom-protector shaft.

My invention is such that the greatest pressure is produced upon the shuttle when it is seated in its box or has just completed its stroke, and the least pressure just while it is being shot out of the box at one end or the loom and is entering the shuttle-box at the other end thereof, and also while it is returning to the box from whence it was shot. The greater pressure above mentioned is only brought upon the shuttle at the moment it has completedits stroke or become seated in either of the said boxes, and the said increased pressure is continued in order to overcome the tendency of the shuttle to rebound until it is time for the picker to shoot the shuttle across the shuttle-race again, when this increased pressure is again relaxed until the shuttle passes out of cup box and enters another box; and my invention is also such that a slide on the side of the frame of the loom for operating the belt-shipper can be moved directly by an arm on the protector-shaft of the 100m, which shaft supports and aids in the operation of the improved shuttle binding or press ure devices.

In the accompanying drawings, Figure 1 is a rear view of a loom-lathe and a portion of the loom-frame and picking-shaft with my invention. Fig. 2 is a side elevation of part of a loom, showing the lathe, its attached parts, and the picking-shaft with my invention, portions of the frame being broken away in order to fully expose certain important parts of Serial No. 139,395. (No model.)

the 100111, Fig. 3 is a detail sectional view of a shuttle-box, shuttle, a binder, and a pressure-arm, as will be presently described. Fig. at is a view of a modification of a portion of the auxiliary pressure devices. Fig. 5 is a side view, partly in section, of a loom having the invention applied to it; and Fig. 6 is a detail top view of a portion of a loom, showing the bcltshipper.

A represents a suitable loom-frame; B, a picking-shaft; G,a lathe;D D, shuttle boxes, and E a shuttle. f 7

Each of the cells of the shuttle-box D is provided with an ordinary pivoted binder consisting of a covered arm, (1, conveniently pivoted at cl and partly entering the interior of the box,and acted upon by a slotted spring, d", fastened at d to the shuttlebox, whereby the arm (1 is pressed against the shuttle E when it is in the box. These devices produce the requisite constant pressure upon the shuttle while it is passing into and out of the boX, but are not suflicient to arrest the shuttle in its rebounding action, and therefore with this contrivance or its equivalent I have combined certain parts, as will be presently described, for increasing the said gppstant or uniform pressure, so as tohold the shuttle against its rebounding action at the completion of its stroke, and relaxing this increased pressure while the shuttle is passing'out of one box and into another.

For carryingout m y said invention I employ an operating-cam, I, on the shaft B, a lever, H, an adjustable connection conlprisirigprefl erably,a spring, G, rod 9, a thumb-nut, h, on the extended screw-t1] readed end of the spring, and a pressure-arm, F, which bears upon the shuttle binder 11, said pressure'arm F being fastened, as shown, to the loom-protector shaft f, which is suitably hung to the latheat f f and has a rocking motion. The shaftfis provided with an arm, f to which is attached the rod 9. The lower end of the spring G, which forms a short rod with screw-thread cut on it, passes through the arm h of the elbow-lever H and receives the thumb-adjusting nut h, as shown. The other arm, 71?, of the lever H extends to the cam I on the picking-shaft B,- and is caused to have a bearing contact upon the same by the tension of the spring G, the force of which can be nicely adjusted by the thumb-nut h.

The cam I has two high concentric surfaces, 2', and two low surfaces, 2'. Vhen the high surfaces of the cam I operate upon the arm h, the lever H is moved into the position shown by dotted lines, and the arm F is caused to bear with an increased force upon the binder d of the shuttle-box cell in line with the race, sufficient to prevent a rebound of the shuttle.

The shuttle-boxes shown in the drawings are respectively a multiplex or a shifting box on one side of the loom and a single box on the other. The devices referred to in the preceding description are shown applied to the shifting-shuttle box, the same beingprovided with four shuttle divisions or shelves and just as many binders.

The binders of the shifting-shuttle box are successively operated as one or the other of them is brought in line with shuttle-race of the lay, and the increase of the pressure and the relaxation of the same are effected through u the cam-acted devices, as specified, when the binder of ashuttle is in line with said race. The single-shuttle box D (shown at the other end of the shuttle-race) has its binder at the front side of the lathe, and the extra pressure is applied to its binder by an arm, F, fastened to a rockshaft, f, suitably hung to the latheO and connected with the shaft f by a coupling which consists of two levers, j j, the lever j being fastened to shaftf and'the levcrj to shaftf, the leverj having a slot, j, and the leverj a pin, 9', moving in the slotj. The single-shuttle box D may, however, have its ordinary spring-acted shuttle-binding arm on the rear side of the lathe, in which case the arm F would also be fastened to the loom-protector shaftf, as shown by the dotted lines in Fig. 5, and the shaft f would not be required.

Near one side frame of the loom the protector-shaft f is provided wit-h an arm, K, which is designed to come in contact with a lug, Z, on the belt-shipper slide L. Said slide L is mounted on one of the sides of the frame, and in the event of the shuttle not arriving at the shuttle-box at the proper time or manner the lugl of this slide is struck by the arm K and the slide moved forward,so as to cause a loom-belt-shipper mechanism,hereinafter described, to be operated and the loom to be stopped.

The belt-shipper mechanism may consist of an ordinary oscillating belt-shipper, M, suitably pivoted at m to the frame, and connected by means of a short link, on, or otherwise to a hand spring-leveiym ,which is fastened atm to the frame and caused to move in aslot, m of an upper plate-extension, m of the frame. The slot m is provided with a step, m, which is occupied by the lever m while the loom is at work.

WVhen the shuttle does not arrive at the proper time in the shuttle-box, and in consequence thereof the slide L is pushed forward by the arm K, apin, Z,on the slide L comes in contact with an adjustable arm, on, on the lever m and pushes the same forward, thereby releasing the said lever from the step m and moving it into the slot at, where its elasticity causes it to move instantly to the end of the slot near the frame. This movement of the hand spring-lever causes the belt-shipper M to slip the belt N from the tight pulley it upon the loose pulley a of the loom. By means of a handle, m at the top end of the lever m the operator moves the same back into the step m when he desires to start the loom.

In carrying out my invention it may be found useful as an equivalent of the plan described to make the parts G and gin one piece, or as asimple connecting-rod, 9, Fig. 4, and to place a spiral spring around the lower end of the rod, between the thumb-nut h and the arm h of the lever H.

.I am aware that shuttle binding and relief mechanism has been employed, comprising an arm upon the protector-shaft, which is connected by a shackle and slotted rod with a vibrating lever, which is actuated by a cam on the loom-shaft; but my invention differs therefrom, inasmuch as my means of connection between the arm f on the protector-shaft and the lever H comprise a lengthening and shortening spring, which is always acting with an elastic pressure-to wit, at times with its full force and at other times with a greatly diminished force-this action avoiding any incidental displacement or throwing out of the pressurearm as the shuttle suddenly and forcibly enters and passes out of its box, while it insures a gentle spring-pressure upon the shuttle during its entrance and passage out of the shuttle-box, this not being the case when the pressure-arm is left free and is operated by the gravity alone of the connected parts. Furthermore, with my construction the spring acts to maintain a constant yielding contact between the angular lever H and the operating-cam I of the loom-shaft B, inasmuch as the spring exerts its force upwardly against the angular lever and downwardly against the arm f of the pressure-arm F, as fully illustrated and described; and, further, by my construction great simplicity and increased durability are obtained. A simple single spring having ordinary proper connecting parts-such as are shown, or their equivalentsis rendered capable of performing functions which heretofore have not been accomplished, except by a weighted lever, a shackle, and slotted connecting-rod, to which weighted lever, shackle, and connecting-rod as ameans of connecting the arm upon the protectorshaft and the cam-acted lever I lay no claim a under my patent.

I claim- 1. The combination of spring G with ordinary shuttle-binding mechanism, shaft f, arm F, arm f, shaft B, cam I, and lever H, substantially as and for the purpose described.

2. The combination of spring G with the lathe O, shuttle-box D, shuttlebinder (Z, binder-spring d loom-shaft B, protectonshaft f, pressure-arm F, arm f cam I, and lever II, substantially as described.

3. The combination of the spring G with the lathe, shuttle-box, shuttle-binder, binderspring, arm F, shaft f, arm f, rod g, elbowlever H, having arms it If, cam I, having depressions i z" and elevations i z, and the loomshaft B, substantially as described.

4. The combination, with the lathe and its shuttle-box, the shuttle-binder, and the binderspring, of pressure-arm F, cam I, loom-shaft B, lever H, spring G, rod 9, leverf shaft f, shaft f", slotted lever j, and lever j, having a pin, 9', substantially as described.

Witnesses:

IV. E. ERA, FRANCIS LEoLhnn. 

